Description
Published:no. 1-10; July 1957/Dec. 1958-Jan. 1967/Dec. 1967.
Item Description:Report for 1959 includes also data for the period Feb. 1956-June 1957.
Physical Description:10 volumes : illustrations ; 26-28 cm.
Publication Frequency:Biennial, 1967-1968
ISSN:0502-5591